ATE421805T1 - Prozessor une verfahren zur gewichtsdetektion in einem w-cdma system mit geschlossener schleife und mehrwegdiversität - Google Patents

Prozessor une verfahren zur gewichtsdetektion in einem w-cdma system mit geschlossener schleife und mehrwegdiversität

Info

Publication number
ATE421805T1
ATE421805T1 AT03701643T AT03701643T ATE421805T1 AT E421805 T1 ATE421805 T1 AT E421805T1 AT 03701643 T AT03701643 T AT 03701643T AT 03701643 T AT03701643 T AT 03701643T AT E421805 T1 ATE421805 T1 AT E421805T1
Authority
AT
Austria
Prior art keywords
weights
weight detection
closed loop
receiver
channel
Prior art date
Application number
AT03701643T
Other languages
German (de)
English (en)
Inventor
Itzhak Bergel
Original Assignee
Marvell D S P C Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marvell D S P C Ltd filed Critical Marvell D S P C Ltd
Application granted granted Critical
Publication of ATE421805T1 publication Critical patent/ATE421805T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0634—Antenna weights or vector/matrix coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0652—Feedback error handling
    • H04B7/0654—Feedback error handling at the receiver, e.g. antenna verification at mobile station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
AT03701643T 2002-01-31 2003-01-31 Prozessor une verfahren zur gewichtsdetektion in einem w-cdma system mit geschlossener schleife und mehrwegdiversität ATE421805T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/066,274 US7065131B2 (en) 2002-01-31 2002-01-31 Processor and method for weight detection in a closed loop diversity mode WCDMA system

Publications (1)

Publication Number Publication Date
ATE421805T1 true ATE421805T1 (de) 2009-02-15

Family

ID=27610462

Family Applications (1)

Application Number Title Priority Date Filing Date
AT03701643T ATE421805T1 (de) 2002-01-31 2003-01-31 Prozessor une verfahren zur gewichtsdetektion in einem w-cdma system mit geschlossener schleife und mehrwegdiversität

Country Status (9)

Country Link
US (1) US7065131B2 (ja)
EP (1) EP1468502B1 (ja)
JP (1) JP4067493B2 (ja)
KR (1) KR100699388B1 (ja)
CN (1) CN100592650C (ja)
AT (1) ATE421805T1 (ja)
DE (1) DE60325937D1 (ja)
MY (1) MY133417A (ja)
WO (1) WO2003065606A1 (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3975069B2 (ja) * 2001-10-25 2007-09-12 株式会社エヌ・ティ・ティ・ドコモ 無線基地局及び無線通信制御方法
JP3679075B2 (ja) 2002-09-13 2005-08-03 松下電器産業株式会社 無線送信装置および無線送信方法
JP3887618B2 (ja) * 2003-08-08 2007-02-28 松下電器産業株式会社 移動局装置および移動局装置における受信方法
US7151951B2 (en) * 2002-12-23 2006-12-19 Telefonktiebolaget Lm Ericsson (Publ) Using beamforming and closed loop transmit diversity in a multi-beam antenna system
DE10328340B4 (de) * 2003-06-24 2005-05-04 Infineon Technologies Ag Verfahren und Vorrichtung zur Berechnung von Pfadgewichten in einem Rake-Empfänger
US7209510B2 (en) * 2004-07-20 2007-04-24 Skyworks Solution, Inc. Channel estimation system for a wideband code division multiple access (WCDMA) communication system
KR100723459B1 (ko) * 2005-07-29 2007-05-31 한국과학기술원 무선 이동 통신 시스템에서의 귀환 신호를 이용한 하향무선 채널 환경 예측 장치 및 방법
JP4079964B2 (ja) * 2005-09-30 2008-04-23 Ｎｅｃエレクトロニクス株式会社 無線受信装置及びアンテナ・ベリフィケーション方法
US7542880B2 (en) * 2006-04-06 2009-06-02 Advanced Micro Devices, Inc. Time weighted moving average filter
US8699603B1 (en) * 2008-07-03 2014-04-15 Avaya Inc. Iterative precoding selection
US8942147B2 (en) * 2011-01-11 2015-01-27 Yibo Jiang Closed loop transmit diversity in continuous packet connectivity

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6831943B1 (en) * 1999-08-13 2004-12-14 Texas Instruments Incorporated Code division multiple access wireless system with closed loop mode using ninety degree phase rotation and beamformer verification
KR100689398B1 (ko) * 1999-10-09 2007-03-08 삼성전자주식회사 이동통신시스템에서 폐루프 송신 안테나 다이버시티 장치 및 방법
JP2001333002A (ja) * 2000-05-24 2001-11-30 Ntt Docomo Inc 移動通信システムにおける送信アンテナウェイト推定方法および移動通信端末

Also Published As

Publication number Publication date
CN100592650C (zh) 2010-02-24
US7065131B2 (en) 2006-06-20
MY133417A (en) 2007-11-30
JP2005516526A (ja) 2005-06-02
KR100699388B1 (ko) 2007-03-26
US20030142731A1 (en) 2003-07-31
JP4067493B2 (ja) 2008-03-26
WO2003065606A1 (en) 2003-08-07
EP1468502A1 (en) 2004-10-20
CN1625847A (zh) 2005-06-08
DE60325937D1 (de) 2009-03-12
EP1468502B1 (en) 2009-01-21
KR20040077924A (ko) 2004-09-07

Similar Documents

Publication Publication Date Title
US7848389B2 (en) Method and apparatus for scaling parameter estimation in parametric generalized rake receivers
IL170333A (en) Channel estimation of a receiver multipath cdma signal
US9729224B2 (en) Wireless receiver with receive diversity
ATE299623T1 (de) Verfahren und vorrichtung zum suboptimalen iterativen empfang für ein cdma-system mit hoher datenübertragungsrate
TW200735567A (en) Method and apparatus for estimating signal-to-noise ratio based on dedicated physical channel pilot symbols
WO2003023996A1 (en) Cdma wireless systems
TW200737794A (en) Radio communication apparatus and radio communication control method
ATE421805T1 (de) Prozessor une verfahren zur gewichtsdetektion in einem w-cdma system mit geschlossener schleife und mehrwegdiversität
TW200509550A (en) Method and apparatus for estimating carrier frequency offset and fading rate using autoregressive channel modeling
JP2006518164A5 (ja)
DE602004029333D1 (de) Kommunikationsempfänger mit einem adaptiven entzerrer, welcher kanalschätzung verwendet
AU761489B2 (en) Method and apparatus for time tracking
ATE408950T1 (de) Verfahren zur kanalschätzung in gegenwart von sendestrahlformung
EP1517454A3 (en) Apparatus and method for searching for cell and multi-path in mobile communication system
AU769479B2 (en) Method and apparatus for energy estimation in a wireless receiver capable of receiving multiple instances of a common signal
Ali et al. Time delay tracking for multiuser synchronization in CDMA networks
Oon et al. Performance of an adaptive successive serial-parallel CDMA cancellation scheme in flat Rayleigh fading channels
AU5904500A (en) Method and apparatus for using frequency diversity to separate wireless communication signals
Lee et al. Multipath selection method for maximum ratio combining in underwater acoustic channels
JP2003037581A5 (ja)
Triki et al. Interference cancellation with Bayesian channel models and application to TDOA/IPDL mobile positioning
Boyer et al. Turbo decoder SNR estimation with RAKE reception
JP2006197350A (ja) 超広帯域無線信号受信機
Chen et al. Fast feedforward channel sounding RAKE receiver
Hu et al. Uplink performance analysis for WCDMA applying WMSA channel estimation technique

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties